Collocations for landmark - noun

distinctive (esp. BrE), prominent
famous, well-known
familiar
After twenty years, all the familiar landmarks had disappeared.

city, local
national
historic, historical
architectural

recognize
designate sth
The building has been designated a historical landmark by the Commission.

building
status (esp. AmE)
The residents are seeking landmark status for the building.

landmark for
The tower was once a landmark for ships.

great, important, major, significant

be, represent
The Russian Revolution represents a landmark in world history.

decision, legislation (AmE), ruling
a landmark decision on gay marriage

case
event
achievement
study

landmark in
The piece is an important landmark in the history of music.